TRUE/FALSE: IF TRUE SHADE A, IF FALSE SHADE B Leaves are broad and thin to minim

Question

TRUE/FALSE: IF TRUE SHADE A, IF FALSE SHADE B Leaves are broad and thin to minimize their absorption of oxygen. Xylem may transport water and materials in either direction depending on where the source and sink are. Transpiration affects the movement of water into roots. Water can hold oxygen than air can Fruits are expanded anthers. Sieve tube members are found in xylem. Book lungs are found in crustaceans and mollusks, while external feathery gills are found in Arachnids. Leukocytes help stop blood loss from wounds. The heart of an adult amphibian has three chambers. Nerve fibers conduct the contraction signal throughout the heart. The contraction of the heart is known as _____ This vein collects blood from the lower body and carries it to the heart: _____ This structure initiates heart contraction: _____

Explanation / Answer

ANSWERS

31) FALSE (because leaves do not utilize oxygen which is in the air only co2 travels through stomata only)

32)FALSE (xylem transport occurs in single direction from roots to leaves due to transpiration pull)

33)TRUE(yes if transpiration rate is higher than the water absorption through roots is also higher)

34)FALSE ( air contains more oxygen)

35)FALSE(they are expanded form of ovary not anthers)

36)FALSE( sieve tube found in phloem)

37)FALSE(crustaceans has gills for respiration)

38) FALSE( no leukocyte aren't involved in blood cogulation)

39)TRUE

40)TRUE

41) the contractions in heart is know as SYSTOL

42) INFERIOR VANA CAVA

43)the heart contraction is initiated by SINO - ATRIAL NODE

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